The role of ticketing technology in enabling MaaS
https://www.railwaygazette.com/analysis/the-role-of-ticketing-technology-in-enabling-maas/55117.article
At least in Japan, it's difficult for small railway companies to rely on fare collection company,
due to budget issues. So, in many cases, they are only accepting cash for train ticket.
To let them more usable, Japan's governments should think about how to aid these railway companies.
